Search bar animation

.side #search {
    position: relative;
}
.side #search input[type="text"] {
    border-color: transparent;
    box-shadow: 0 0 1px 1px #808080;
}
#searchexpando {
    position: absolute;
    width: 280px;
}
.side #search:before,
.side #search:after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    background: -webkit-linear-gradient(left, #03A9F4, #fff 30%);
    background: linear-gradient(to right, #03A9F4, #fff 30%);
    height: 2px;
    -webkit-animation: srch 5s linear infinite;
    animation: srch 5s linear infinite;
}
.side #search:before {
    top: 0;
}
.side #search:after {
    background: -webkit-linear-gradient(left, #fff 70%, #03A9F4 100%);
    background: linear-gradient(to right, #fff 70%, #03A9F4 100%);
    bottom: 0;
    -webkit-animation: srch2 5s 2.5s linear infinite;
    animation: srch2 5s 2.5s linear infinite;
}
@-webkit-keyframes srch {
    from { background-position: 0 0 ; }
    to { background-position: -300px 0; }
}
@-webkit-keyframes srch2 {
    from { background-position: 0 0 ; }
    to { background-position: 300px 0; }
}
@keyframes srch {
    from { background-position: 0 0 ; }
    to { background-position: -300px 0; }
}
@keyframes srch2 {
    from { background-position: 0 0 ; }
    to { background-position: 300px 0; }
}